Distributorless ignition, also called EI (electronic ignition), does away with the distributor ... camshaft position sensor, ignition control module, coil pack(s) and the PCM (powertrain control ...

PerTronix offers three types of Ignitor upgrades for your tach-drive distributor. There's the original black Ignitor module ... reliability of GM's HEI ignition without the hassle of a swap.